| Zugriffsnummer | 18804 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | 171Yb+ single-ion optical Standard at 688 THz |
| Autor(in); Institution |
Tamm, Christian; 4.4, Zeit und Frequenz, PTB-Braunschweig
Lipphardt, Burghard; 4.4, Zeit und Frequenz, PTB-Braunschweig
Schnatz, Harald; 4.3, Quantenoptik und Längeneinheit, PTB-Braunschweig
Wynands, Robert; 4.4, Zeit und Frequenz, PTB-Braunschweig
Weyers, Stefan; 4.4, Zeit und Frequenz, PTB-Braunschweig
Schneider, Tobias; 4.4, Zeit und Frequenz, PTB-Braunschweig
Peik, Ekkehard; 4.4, Zeit und Frequenz, PTB-Braunschweig
|
| Quelle/Jahr | Proceedings of the 20th European Frequency and Time Forum:(2006), 293 - 297 |
| ISBN | 3-9805741-8-0 |
| Verlag | Braunschweig: Physikalisch-Technische Bundesanstalt |
| Konferenzangaben | 20th European Frequency and Time Forum (EFTF), Braunschweig, 27-30, March, 2006, Germany |
| Zusammenfassung | Two 171Yb+ single-ion optical frequency standards operating at 688 THz (436 nm) are compared in order to investigate systematic frequency shifts in the sub-Hertz range. In the absence of externally applied perturbations, a mean relative frequency difference of 3.8(6.1)·10-16 is observed. This agreement is comparable to that of the most accurate comparisons between cesium fountain clocks. Using a femtosecond frequency comb generator based on a Er3+-doped fiber laser, the frequency of the 171Yb+ standard is measured with a relative systematic uncertainty of 3.1·10-15 and a statistical uncertainty of 0.6·10-15. |
